I saw a query in the newspaper about the cheapest time to visit New York. This might be of use to those planning honeymoons. I can imagine that after the hefty wedding bill, brides are looking for the best bargains on holidays as well. 
The cheapest time to visit anywhere is when no one else wants do. On American public holidays, they are more likely to want to be at home with their families. Get an American calendar and pick few holiday weekends like Memorial Day (25 May) Labour Day (7 …